The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With 8,472 square miles (21,940 km2) and a population of more than 2.2 million people, it is the second-largest metropolitan area centered in Missouri (after Greater St. Louis) and is the largest metropolitan area in Kansas, though Wichita is the largest metropolitan area centered in Kansas. Alongside Kansas City, Missouri, these are the suburbs with populations above 100,000: Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; Independence, Missouri; and Lee's Summit, Missouri.
Baiyu County, which belongs to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the transitional zone from Qinghai-Tibet Plateau to Yunnan-Guizhou Plateau. It belongs to the northern section of the Hengduan Mountains and the east bank of the upper reaches of the Jinsha River. It is located between 98 degrees 36 minutes east longitude to 99 degrees 56 minutes and 30 degrees 22 minutes to 31 degrees 40 minutes north latitude. It is bordered by Xinlong County to the east, Batang and Litang counties to the south, Gongjue and Jiangda counties in Tibet to the west, and Ganzi County and Dege County to the north. By the end of 2011, Baiyu County had an area of 10591 square kilometers and had jurisdiction over 1 town and 16 townships with a total population of 53600, a birth rate of 8.64 ‰ and a natural population growth rate of 6.67 ‰. In 2011, Baiyu County achieved a GDP of 869 million yuan, an increase of 9.7% over 2010.